US1960178A - Pilger rolling mill - Google Patents

Pilger rolling mill Download PDF

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Publication number
US1960178A
US1960178A US555587A US55558731A US1960178A US 1960178 A US1960178 A US 1960178A US 555587 A US555587 A US 555587A US 55558731 A US55558731 A US 55558731A US 1960178 A US1960178 A US 1960178A
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US
United States
Prior art keywords
zones
rolls
pilger
working
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US555587A
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English (en)
Inventor
Albert Werner
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Individual
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Individual
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Publication date
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Publication of US1960178A publication Critical patent/US1960178A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/02—Rollers therefor

Definitions

  • each roller being provided with a, circumferential groove, the central portion of which is semi-circular in cross-section and the sides of which are sloped outwardly towards the two gapswhich are located between the two rollers at the sides thereof.
  • Figure 1 is a diagrammatic illustration of an arrangement of Pilger rolls as heretofore known.
  • Figure 2 is a diagrammatic view of Pilger rolls constructed for the purpose of carrying out the process in accordance with this invention and arranged adjacent to one another,
  • Figure 4 is a view similar to Figure 3 but illustrating the arrangement of four Pilger rolls constructed in accordance with this invention
  • Figure 5 is a section of a Pilger roll constructed in accordance with this invention, the section being taken at the centre of the roll in a plane at right angles to the axis of rotation thereof,
  • FIG 7 shows a perspective view of a Pilger roll constructed according to the invention, showing the working zones 0 and c and the compensation zone b Referring to Figure 1 it will be observed that the area between the rolls through which a tube to be rolled is arranged to pass, is divided into the following zones:--
  • This process produces tubes, the walls of which vary in cross-section and are subjected to varying degrees of extension of the material thereof owing to the varying working pressures produced during each step of the rolling operation, the extension in the central portions of the zones 0 and 0 being relatively much greater than that producedin the zones a and a.
  • This invention consists of a process for the production of seamless tubes on a Pilger rolling mill wherein each tube is rotated between successive steps in a rolling operation through a predetermined angle so that thickened portions produced in the tube wall in one step are rolledout in the next, characterized by subjecting the tube when being so rolled to at least three different zones of pressure from each roll, the pressures being arranged' to equalize substantially the spreading of the'material of the tube in relationship to the different peripheral speeds of those portions of the working surfaces of the rolls which correspond to the zones of pressure.
  • the gap zones a (2) The compensating zones 1) and b (3) The working zones 0, 0 c and c.
  • FIG. 2a shows a Pilger roll, the crossk section of which does not consist of one are but of two arcs, forminga point in the centre, producing thus a so-called pointed arc Pilger roll. Also in this arrangement there may naturally be provided besides the compensation zone formed at the top by the pointed arc form, still additional compensation zones laterally.
  • a similar result may be obtained by sub-dividing the working surface of the rolls into a larger number of zones than those illustrated, in which case each working zone is located between two compensating zones or between a compensating zone and a gap zone, and if such further sub-division of the working surfaces of the rolls is employed, the angle of rotation of the rolls during each step of a rolling operation must be selected in accordance with such subdivision.
  • said compensating zone being a zone of reduced roller pressure and equalizing the elongation process, said zones being of uniform width and depth and extending circumferentially over the entire working surface of the roll.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Control Of Metal Rolling (AREA)
US555587A 1930-08-20 1931-08-06 Pilger rolling mill Expired - Lifetime US1960178A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1930M0015930 DE575529C (de) 1930-08-20 1930-08-20 Pilgerwalzenkaliber
DEM113361D DE576705C (de) 1930-08-20 1931-01-03 Walzenkalibrierung fuer Stopfenwalzwerke

Publications (1)

Publication Number Publication Date
US1960178A true US1960178A (en) 1934-05-22

Family

ID=6569745

Family Applications (1)

Application Number Title Priority Date Filing Date
US555587A Expired - Lifetime US1960178A (en) 1930-08-20 1931-08-06 Pilger rolling mill

Country Status (5)

Country Link
US (1) US1960178A (en(2012))
BE (1) BE381370A (en(2012))
DE (2) DE575529C (en(2012))
FR (1) FR722561A (en(2012))
GB (2) GB369627A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233834A (en) * 1979-01-26 1980-11-18 Sandvik Special Metal Corporation Method and apparatus for producing zircaloy tubes and zircaloy tubes thus produced
CN115318828A (zh) * 2022-09-02 2022-11-11 张家港华裕有色金属材料有限公司 一种用于冷轧金属管的轧制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918023C (de) * 1950-05-27 1954-09-16 Schloemann Ag Rohrwalzwerk, insbesondere Pilgerrohrwalzwerk, mit aus mehr als zwei Walzen bestehenden Kalibern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233834A (en) * 1979-01-26 1980-11-18 Sandvik Special Metal Corporation Method and apparatus for producing zircaloy tubes and zircaloy tubes thus produced
CN115318828A (zh) * 2022-09-02 2022-11-11 张家港华裕有色金属材料有限公司 一种用于冷轧金属管的轧制方法
CN115318828B (zh) * 2022-09-02 2023-10-27 张家港华裕有色金属材料有限公司 一种用于冷轧金属管的轧制方法

Also Published As

Publication number Publication date
BE381370A (en(2012)) 1931-08-31
DE576705C (de) 1933-05-15
DE575529C (de) 1933-04-28
FR722561A (fr) 1932-03-26
GB369627A (en) 1932-03-22
GB375107A (en) 1932-06-23

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